All these aspects of history are described and vividly illustrated in New Castle: Chappaqua and Millwood. The book contains some 200 stunning photographs from the New Castle Historical Society, Westchester County Historical Society, Mount Kisco Historical Society, Chappaqua Public Library, and private collections. It was compiled by members of the New Castle Historical Society and town historian Gray Williams with the hope of generating a greater understanding and appreciation of the town's history.